My glass material isn't transparent in Eevee
By default, some options that require extra computing efforts are turned off in Eevee and they must be turned on manually.

In the case of a refractive object, you must enable:


Under the Render settings, Screen Space Reflections and, within it, Refraction. manual.


Then, in each of your refractive materials' Material settings, you should enable Screen Space Refraction. manual.




If your material has some kind of Alpha transparency (e.g. a Transparent BSDF shader), you should also select a suitable Blend Mode. manual.